Attachment for sewing-machines.



H. DE v05. ATTACHMENT FOR SEWING MACHINES.

APPLICATION FILED APR. 24, I918.

Patented Mar. 11

1919. 2 SHEETS-SHEET 1.

1 l/VI/EA/TOR W/V Z/ML,

A TTOH/IIEY A. H. DE 'VOE.

ATTACHMENT FOR SEWING MACHINES.

APPLICATION FILED APR. 24, 1918.

1,296,632. Patented Mar. 11,1919.

2 SHEETS-SHEET 2.

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UNIT STATS PAT T ()FIC.

[ALBERT H. DE voE, 0F wEs'rEIELn'nEw JERSEY, ASSIGNOR TO THE srNGE MANU-FACTURING COMPANY, A CORPORATION on NEW JERsEE.

ATTACHMENT FOR SEWING-MACHINES.

Specification of Letters Patent. 7

Patented. Mar. 11, 1919.

Application filed April 24, 1918. A Serial No. 230,398.

To all'whom it may concern:

Be it known that I, ALBERT H. DE Von, a citizen of the United States,residing at Westfield, in the county of Unionand State of New Jersey,have invented certain new and useful Improvements in Attachments forSewing-Machines, of which the follow-;'

ing is a specification, reference belng had therein to the accompanyingdrawings.

This invention relates to attachments for sewing machines andparticularly to a combined hemming and. strip-folding device for makinga shirt facing.

It aims to provide a new and improved construction aifording readyaccess to the hemmer for inserting the body-fabric of successivelyhandled garments, for insuring asmooth folding of a strip immediatelybefore it is stitched to a body-fabric, and a construction which isquickly and completely removable from a machine in order to permit theusual stitching operations thereon without leaving projections, whichare unsightly and obstructive. v

The invention concisely stated comprises a base-plate to which a hemmerand strip,- folder are adjustably secured, the latter being movable froma position abovethe forthe opposite edge of'the strip in order that.

the strip may be folded smoothly at all times.

An embodiment of the invention is illustrated in the accompanyingdrawings, in which Figure 1 is a plan view of the attachment. Fig. 2 isa bottom plan view of the strip-folder complete. Fig. 3 is a perspectiveof one of the edge-guides. Fig.- Ais a side elevation of the attachmentshowing it in operative relation to the needle and resser-foot of asewing machine. Fig. 5 is a perspective of the base-plate andstripfolder with an adjustable partof, the folder removed. Fig. .6 is aperspective of the adjustable part of thefolder'. Fig. 7 is a crossmerto a position at one side thereof. A'

section through the superposed hemmer and strip-folder with the needlesappearing in theback ground and. Fig. 8 is a perspective of the workdone with the attachment.

The attachment is shown mounted on a sewing machine having any suitablestitchforming mechanism in which a plurality of needles 1 are arrangedin spaced pairs and operate through needle-holes 2 in a. presserfoot 3above a throat-plate 1 provided with slots 5 in which move feed-dogs(not shown) as will be understood by those skilled in the art.

- The attachment consists of three main portions, a base-plate A, ahemmer B and a strip-folder C. i r

The base-plate A is provided with an elongated and countersunk slot 6receiving a pair of screws 7 by which it is secured to the cloth-plate 8of the machine and. maybe adjusted transversely to the direction offeed.

is a projecting arm 9 whose upper surface is inclined to the uppersurface of the clothplate 8 toward the stitching point as clearlyappears in the side elevation inFig. 4.

The hemmer B has a horizontally arranged body-portion 10 from whichrises a scrollportion 11, see Fig. 4:. In the horizontal portion 10 ofthe hemmer elongated slots 12 are provided and by clamping screws 13threaded in the arm 9 of the base-plate the hemmer is adjustably clampedin position with its edge-folding portion in advance of the left handpair of needles, see Fig. 7

In a groove or'slideway 14. in the under side of the base-plate A isslidably mounted a bracket-arm 15 which has a bent portion 16 at one endextending upwardly through a rectangular opening 17 in the base-plateand carrying the strip-folder C which is soldered or otherwise suitablysecured thereto in position above the hemmer'B andin advance of bothpairsfof spaced needlesl. A stud-screw 18 is secured to the bracket-arm15 with its shouldered portion (not shown) extending upwardly through aslot .19 notched as indicated at .20 to receive the pin end 21 of aknob22 which is carried at one free end of a bellcrank-lever 23 pivotedon i the stud-screw l8 and. having its opposite plate A parallel to thegroove 14 receiving;

the bracket-arm 15. V

The strip-folder C as best shown in Figs. 2 and 5 comprises an outercasing 27 bent at its sides to forma wideunder wall 28 and relativelynarrow under wall 29 whose adjacent free edges are spaced from eachother, the rear end of the under wall 29 at its delivery end being cutaway as indicated at 30. The casing portion 27 of the strip-folder issoldered or otherwise suitably secured to a plate 31 to. which in turnis soldered a wing 32 spaced as indicated at 33 slightly from the narrowunder wall 29 to define a passage-way for one edge of the strip. Anarbor-finger 34 is also permanently. secured to the plate 31 and extendswithin the casing 27. of the strip-folder in spaced relation therewithabove the narrow under wall 29. Around the arbor-finger 34 one edge ofthe strip isfolded. The previously mentioned parts of the strip-folder,

27 to 34 inclusive, constitute what may be termed for convenience theprimary part of the strip-folder. a

The secondary part of the strip-folder is shown best in Fig. 6 andcomprises a plate 35 having a folding scroll 36 bent upwardly therefromat one side and an arbor-finger 37 inclosed by the folding scroll 36butsup ported through a long lateral plate 38 from a block 39 at the otherside of the plate 35. The secondary. part of the" strip-folder isadjustablewithin the primary part, a slot 40 being provided in the plate35 to receive a stud 41 projecting upwardly from the plate 31 and a slot42 in the stationary plate 31 receiving a screw 43 which is threadedinto'the block 39 on themovable plate 35.

- In order to'bring the turned under edges of the strip into abuttingrelation adjacent one side of the folded product edge-guides 44 and 45are adjustably secured by screwand-slot connections 46 and '47respectively to opposite sides of the plate 31 of the primary .part ofthe stripfolder. The edgeguide 45 has a warped surface 48 at its rearend which is arranged to deflect any excess width of the folded stripinto lapped relation with the narrow under folded portion of the stripand to thereby prevent crowding and, consequent wrinkling in theproduct.

.With the present invention an operator can readily shift thestrip-folder from a position over the hemmer as shown in solid lines inFig. 1 to a position at one side thereof as shown in dotted lines in thesame figure, for convenience in introducing the body of facings andtakes care of any excess width of material that may occurand would Iattachmentfor sewing machines inordinarily clog in its passage throughthe strip-folder and produce wrinkles in the finishedproduct. v

' Having thus set forth the nature of the invention, what I claim hereinis 1. An attachment for sewing machines including in combination, ahemmerand a superposed strip-folder, and means for supporting thestrip-folder permitting it to be moved laterally from a position overthe hemmer to a positionat one side thereof to facilitate. introductionof. work into the hemmer.

2. An attachment for sewing machines including'in combination, a hemmeranda superposed strip-folder, and means for supporting the strip-folderpermittingit. to be moved laterally from a position over the hemmer'to aposition at one side thereof to facilitate introduction if, Work intothehemmer, said meansincluding a lockingdevice for holdingthe strip folderin or out of superposed relation with the hemmer. V

3. 'An attachment, for sewing machines including in combination, ahemmer and a superposed stripfolder, andmeans for supporting thestrip-folder permitting it to be moved laterally from a position overthe hemmer to a position at one side thereof to facilitate introductionof work into the hemmer, said means including a spring-pressed latch forholding thestrip-folder in or out of superposed relation withthe'hemmer,

-4. An attachment for sewing machines having a needle including incombination a base-plate, a. hemmer secured to said baseplate,astrip-folder supported by said baseplate and movable laterally thereonfrom a normal working position above the hemmer to one side thereof forconvenient access to the hemmer, said base-plate being adjustabletransverse the line of seam-formation.

5. An attachment for sewing machines having a needle including incombination a base-plate, a hemmer adjustablv securedto said base-plate,a. strip-folder supported from beneath said base-plate and movablelaterally thereon from a normal working position above the hemmer to aposition at one side thereof, said base-plate being adjustably securedto the machine for rmovement transverse of the line of seam-formation. 7

6. An attachment for sewing-machines including in combination, abase-plate, a hemmer and a superposed strip-folder, a bracketarmextendingfrom said strip-folder downwardly, and laterally beneath thebase-plate, a slide-way provided in the under side of said base-plate toreceive thelaterally extending portion of said bracket armQand aspringpressed latch carried by said laterally extending portion of thebracketarm for securing it in predetermined positions.

cluding in combination, a base-plate, a hem mer and a superposedstrip-folder, a bracketarm extending from said strip-folder downwardlyand laterally beneath the base-plate, a slide-way provided in the underside of said base-plate to receive the laterally extending portion'ofsaid bracket-arm, alatch pivoted to said laterally extending portion ofthe bracket-arm, and a spring sunk within the base-plate and connectedat its opposite ends to said base-plate and said latch where:

by'the strip-folder may be secured in one of a plurality ofpredetermined positions.

8. An attachment for sewing machines including in combination, abase-plate, a hemmer and a superposed strip-folder, abracketarmextending from said strip-folder downwardly and laterally beneath thebase-plate, a slide-way provided in the under side of said base-plate toreceive the laterally extending portion of said bracket-arm, slotsprovided in said base-plate one above and the other laterally of thebracket-arm, a pin carried by said bracket-arm and extending through oneof said slots, a latch pivoted on said pin and having a portion of itsbody overlying the base-plate on the side thereof opposite to theslide-way, a spring within the other of said slots and secured to saidlatch whereby the strip-folder may be held in normal'working positionoverhanging the hemmer or in an abnormal position to one side of saidhemmer.

9. In combination with a multiple needle sewing machine having needlesarranged into spaced pairs, a hemmer arranged in front of one pair ofthe needles to deliver thefolded edge of a body-fabric thereto, a

strip-folder normally occupying a position above the hemmer anddelivering theopposite sides of a folded strip to both pairs of needles,said folder being adjustable to accommodate strips of different widthsand for bringing the side edges of the folded strip together adjacentone side of the strip, said means being adjustable.

12. In an attachment for sewing machines, in combination, a base-plate,a hemmer and an overlying strip-folder supported on said base-plate andeach movalble relative thereto, edge-guides adjustably strip-folder forcontrolling the opposite edges of a folded strip.

13. In an attachment for sewing machines, in combination, a base-plate,a hemmer and a strip-folder supported onsaid base-plate, saidstrip-folder having pairs of arbor-finsecured to said 7 gers andsurrounding scrolls for folding a strip into a band, one of which pairsis adjustable relative to the other. 7

14. In an attachment for sewing machines, in combination, a base-plate,a'hennner and an overlying strip-folder supported on said base-plate,said strip-folder having pairs of arbor-fingers and surrounding scrollsfor folding a strip into a band one of which pairs is detachably andadjustably secured in osition relative to the other of said pairs.

11 testimony whereof I have signed my name to this specification.

ALBERT H. DE VOE.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

Washington, D. G. V

